Calling all 700R4 Experts!

[SeventyOne]

Looking at the link to the cable you have: I've never seen a TV cable with the brass thing at the end.

There are 5 types of OE TV cables shown here


They are of varying lengths but again none have the brass thing. I think you have a Th350 kickdown installed. Google search image shows this, with brass thing.


Also I know you have the carb throttle corrector piece but do you have the cable bracket corrector?

https://www.ebay.com/itm/TH200C-2004...-/322530942176

[mister.freeze]

This does have the brass thingy, and not the TH350 end.

[mister.freeze]

Driving to work this morning, the trans didn’t shift into 4th. At one point, it felt ready to, so I gave the gas a quick whomp and into 4th it went. Went into 4th as it should after that. To me, that reinforces the sticky valve theory. Low pressure could also be the problem, I admit. I’ll try to find a port and see if I can borrow the gauge. Also, as stated before, it shifts better when cold, but won’t go into 4 until very warm.

[YoungPup1977]

Originally Posted by mister.freeze

Driving to work this morning, the trans didn’t shift into 4th. At one point, it felt ready to, so I gave the gas a quick whomp and into 4th it went. Went into 4th as it should after that. To me, that reinforces the sticky valve theory. Low pressure could also be the problem, I admit. I’ll try to find a port and see if I can borrow the gauge. Also, as stated before, it shifts better when cold, but won’t go into 4 until very warm.

OUTTA here....

[made2drag]

Originally Posted by mister.freeze

Driving to work this morning, the trans didn’t shift into 4th. At one point, it felt ready to, so I gave the gas a quick whomp and into 4th it went. Went into 4th as it should after that. To me, that reinforces the sticky valve theory. Low pressure could also be the problem, I admit. I’ll try to find a port and see if I can borrow the gauge. Also, as stated before, it shifts better when cold, but won’t go into 4 until very warm.

How far a drive is work?

[made2drag]

Originally Posted by mister.freeze

Driving to work this morning, the trans didn’t shift into 4th. At one point, it felt ready to, so I gave the gas a quick whomp and into 4th it went. Went into 4th as it should after that. To me, that reinforces the sticky valve theory. Low pressure could also be the problem, I admit. I’ll try to find a port and see if I can borrow the gauge. Also, as stated before, it shifts better when cold, but won’t go into 4 until very warm.

the port is on the drivers side and is also a port to measure trans temp. If I do my pressure tests, I might as well put a temp sensor in it when im done and run a temp guage.

[made2drag]

Are you using Dextron 3?

[made2drag]

You started having trouble after a fluid change so im wondering if the viscosity of the ATF has anything to do with it? When its warm its thinner and works, when cold its thicker and doesnt. I wonder if this effects pressure. I would also be driving 30 mins and checking the level often. Almost sounds a quart low to me. But im just thinking out loud

[made2drag]

If you stomped on it and it went into 4th, doesn't that sound like the cable being too loose at normal throttle and when stretched a tad (while stomping on it) the pressure goes up enough to shift?

[SeventyOne]

Originally Posted by made2drag

If you stomped on it and it went into 4th, doesn't that sound like the cable being too loose at normal throttle and when stretched a tad (while stomping on it) the pressure goes up enough to shift?

I agree. Cable is wrong and brackets are wrong. nothings going to work right until those are addressed.

[YoungPup1977]

Qq.............

[mister.freeze]

Originally Posted by made2drag

If you stomped on it and it went into 4th, doesn't that sound like the cable being too loose at normal throttle and when stretched a tad (while stomping on it) the pressure goes up enough to shift?

While that could be the case, the ‘whomp’ just kinda made the motor stumble rather than rev up to increase pressures. It gives me the feeling of a sticky valve, kinda like a sticky throttle.

Also, from all my adjusting, I feel like there’s too much tension at low trottle, which could be where the hang up is rather than the valve actually sticking.

Reducing tv cable tension makes the transmission shift earlier than I think it should, but 4th gear works. Tightening it to shift later (where I think it should), 4th goes away. Sooo... what I’m after is less tension near idle and more near WOT, meaning more travel. More travel means a longer bracket. Right?

The question of fluid viscosity is a good one. Not sure what fluid I used at the change, but I know it was an ‘accepted’ fluid. That’s not to say it had something different previously.

[made2drag]

Originally Posted by mister.freeze

While that could be the case, the ‘whomp’ just kinda made the motor stumble rather than rev up to increase pressures. It gives me the feeling of a sticky valve, kinda like a sticky throttle.

Also, from all my adjusting, I feel like there’s too much tension at low trottle, which could be where the hang up is rather than the valve actually sticking.

Reducing tv cable tension makes the transmission shift earlier than I think it should, but 4th gear works. Tightening it to shift later (where I think it should), 4th goes away. Sooo... what I’m after is less tension near idle and more near WOT, meaning more travel. More travel means a longer bracket. Right?

The question of fluid viscosity is a good one. Not sure what fluid I used at the change, but I know it was an ‘accepted’ fluid. That’s not to say it had something different previously.

Perfect. Looks like youre near the finish line soon.

[made2drag]

Originally Posted by mister.freeze

While that could be the case, the ‘whomp’ just kinda made the motor stumble rather than rev up to increase pressures. It gives me the feeling of a sticky valve, kinda like a sticky throttle.

Also, from all my adjusting, I feel like there’s too much tension at low trottle, which could be where the hang up is rather than the valve actually sticking.

Reducing tv cable tension makes the transmission shift earlier than I think it should, but 4th gear works. Tightening it to shift later (where I think it should), 4th goes away. Sooo... what I’m after is less tension near idle and more near WOT, meaning more travel. More travel means a longer bracket. Right?

The question of fluid viscosity is a good one. Not sure what fluid I used at the change, but I know it was an ‘accepted’ fluid. That’s not to say it had something different previously.

So have you tried using a gps to make sure it really is shifting too soon MPH wise? If everything works (when it seems too loose to you) and your speedo is off due to big tires, you may actually be in the 17-20 mph 1st to 2nd range and 30 to 3rd and 45-50 to 4th. (mine shifts at 52 using a gps and I don't know if this is correct or not.)

At 50 with big tires you might see 43 on your speedo. I know with a shorter tire my speedo would read 60 when I was actually running 53 or whatever.

It is quite possible that when its shifting to 4th, its actually adjusted correctly.

When it shifts to 4th what is your MPH?

[YoungPup1977]

Qq...........

[SeventyOne]

Step 1: get correct cable and brackets.

Step 2: check pressure with gauge.

Step 3: drive and adjust TV cable tension as needed for shift point.

Step 4: stop talking about this.

[YoungPup1977]

Originally Posted by SeventyOne

Step 1: get correct cable and brackets.

Step 2: check pressure with gauge.

Step 3: drive and adjust TV cable tension as needed for shift point.

Step 4: stop talking about this.

LOL!!!!! I think the buttons on the dash are not aligned.... no wait, its the fluid, to thick of fluid...it works when its hot...gots to be the fluid...and its exactly a quart low.....

[SeventyOne]

Actually wait lol

Step 1: replace 700r4 with Th350.

Step 2: talk about why the kickdown cable is wrong.

Step 3: turn K5 into flintstone-style foot propelled truck.

Step 4: stop talking about this.

[YoungPup1977]

I think the answer was in post #100, I copied and pasted this from post 100 below....
--------------------
"Wow. Well... for starters, the short piece of shroud that actuallu goes in to the transmission is bigger than the “correct” cable, meaning the hile is bigger and the cable won’t seal. "
=========================================================================
the hole is bigger and the cable wont seal.......I would love to see a pic of the cable bolted to the transmission......really sounds like a T350 cable bolted to the 700R4....not even sure it can be done, but .........

the T350 cable is smaller in diameter at the trans than a 700r4 TV cable is...thats why the "HOLE IS BIGGER AND THE CABLE WON"T SEAL "

DOES YOUR TRANS LEAK ?
LOL!!!!!!!!!

[mister.freeze]

Originally Posted by YoungPup1977

I think the answer was in post #100, I copied and pasted this from post 100 below....
--------------------
"Wow. Well... for starters, the short piece of shroud that actuallu goes in to the transmission is bigger than the “correct” cable, meaning the hile is bigger and the cable won’t seal. "
=========================================================================
the hole is bigger and the cable wont seal.......I would love to see a pic of the cable bolted to the transmission......really sounds like a T350 cable bolted to the 700R4....not even sure it can be done, but .........

the T350 cable is smaller in diameter at the trans than a 700r4 TV cable is...thats why the "HOLE IS BIGGER AND THE CABLE WON"T SEAL "

DOES YOUR TRANS LEAK ?
LOL!!!!!!!!!

The hole in the transmission matches the bigger sleeve on the cable. The cable fits and seals. It wouldn’t seal with the new cable.

[YoungPup1977]

the thread that just keeps on giving....giving confusing BS....maybe use your hands and actually fix it...sitting in front of your computer reading wont fix this, made2drag will read for you too.....LOL!!!!!!! WHOMP WHOMP !!!!!! the reason the truck is called FOX, the truck is smarter than the owner....

[made2drag]

Originally Posted by YoungPup1977

ok Mr Freeze.....I knew it was not a t350 cable on there...it was only HOPE.....

with all the modern day technology at your finger tips, the truck still is not fixed ....
Only going ask one question at a time.......

What do "you" really think is wrong ?

[made2drag]

Im still thinking the 'whomp' making the motor stumble doesn't really matter (carb issue) as it still pulled the TV cable that adjusts the pressure to the trans.

[mister.freeze]

The shift speeds I reported did come from GPS. My speedo is WAY off...

The whomp did pull the cable, whis is why I did it. Because the motor DID NOT rev, I don’t think pressures changed to cause the shift to 4th. THAT’S why I’m thinking sticky valve or too much preload in the cable.

The real issue, I guess, is why the trans started acting differently. I did not mess with the cable when I did the fluid and filter change. The trans worked as before for 1500 miles after that. It woukd stand to reason that cable and geometry are not at fault, but rather, as suggeted, something internal, not related to the cable or fluid. A stick valve would seem to fit that bill...Anyone agree or not?

[made2drag]

Originally Posted by mister.freeze

The shift speeds I reported did come from GPS. My speedo is WAY off...

The whomp did pull the cable, whis is why I did it. Because the motor DID NOT rev, I don’t think pressures changed to cause the shift to 4th. THAT’S why I’m thinking sticky valve or too much preload in the cable.

The real issue, I guess, is why the trans started acting differently. I did not mess with the cable when I did the fluid and filter change. The trans worked as before for 1500 miles after that. It woukd stand to reason that cable and geometry are not at fault, but rather, as suggeted, something internal, not related to the cable or fluid. A stick valve would seem to fit that bill...Anyone agree or not?

I see now on the your motor rev theory. rpms and cable pull need to happen. I can see the bracket and cable not coming in the picture in the beginning as it was working before and not now. But since the cable has been adjusted again, it may be off now. Sticky valve since fluid change and lucas?... so the only thing that's changed is fluid. So the incorrect cable geo that actually worked at the wrong angle before has now been messed with but might not have been the problem. Weird.

So filter, fluid (dextron 3 compatible) and you put lucas in also, changed it from shifting to 4th to needing TV cable adjustment in order to shift.

There is like 12 quarts of atf in the trans so changing the 4 or 5 that actually drains seems weird to make a big change. I could see f it slipped or didn't work afterwords, being the clutch material drained caused it not to engage anymore.